174 LEPIDOPTÉROLOGIE COMPARÉE 



" Directly after émergence the larva measures i/io m. long. 

 The body is slightly attenuated posteriorly, and strongly wrinkled 

 transversely, each of the abdominal segments having six subdivi- 

 sions, the first on each being the widest. There are five longitu- 

 dinal dull amber-coloured lines, one medio-dorsal, and two on 

 each side, i. e., one sub-dorsal and one immediately above the 

 spiracles; between thèse last two is a very fine' and rather broken-up 

 line of the same colour; the latéral ridge is somewhat whiter than 

 the dorsal surface, which is a pale pearly-ochreous; the ventral 

 surface is rather darker ochreous. The anal points end in a short 

 slightly curved bristle. On the side of each segment are five 

 minute dusky claw-like points, ail projecting backwards, two 

 between the dorsal lines, one just above the spiracle, and two just 

 below it; on the claspers, legs, and last three segments are simple 

 white spines. The spiracles are dull olive-brown. The head is 

 large and globular, light ochreous in colour, beset with tniy white 

 points; eye spots black. 



" The young larvae refused to feed on the beak-rush, but on 

 supplying them with Poa annua they at once started, and continued 

 feeding well upon it. They feed during daytime when young. 



" First moult, August 24th. Before the first moult, twelve days 

 old, it measures i/6in. long; the ground colour is then greenish- 

 ochreous, but almost pure green over the greater part of the anterior 

 half, due to the food showing through its semi-transparent body. 

 The amber stripes of its earlier life are now of a darker hue, being 

 drab bordered below by a whitish line along the edge of the side 

 stripes. 



" Before the second moult it measures 1/4 in. long, ground 

 colour green, with darker green medio-dorsal, sub-dorsal, and 

 spiracular longitudinal stripes; the first is bordered on each side 

 by a fine whitish line, the sub-dorsal is bordered above by a 

 broader and more conspicuous whitish stripe, and bordered below 

 by a darker line than the ground colour; the spiracular stripe is 

 bordered below by a conspicuous and comparatively broad white 

 stripe. The head is pale yellow-green, granulated and beset with 



